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Jose Valle18/08/2026, 09:00
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Byeongsu Yang (Chonnam National University)18/08/2026, 09:30Invited plenary talks: 25'+5'
This talk provides an overview of the current status and future prospects of major neutrino experiments from an experimental perspective. Focusing on representative reactor, accelerator, atmospheric, solar, and astrophysical neutrino experiments, it will introduce their scientific objectives and recent progress.
The talk will also review recent experimental developments related to key...
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Andre de Gouvea (Northwestern University)18/08/2026, 10:00Invited plenary talks: 25'+5'
One of the central questions in particle physics is the nature of neutrinos: Are they Majorana or Dirac fermions? I will quickly review the leading experimental campaign to address this question - the search for neutrinoless double-beta decay - and will then discuss other logical possibilities that do not directly involve looking for the violation of lepton number.
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Ernest Ma (UC Riverside)18/08/2026, 11:00Invited plenary talks: 25'+5'
Flavor alignment and mass hierarchy in quarks are shown to be achievable in a renormalizable theory using the dark sector, while keeping only the one Higgs doublet of the standard model.
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Enrico Lunghi (Indiana University)18/08/2026, 11:30Invited plenary talks: 25'+5'
Over the past decade, the LHCb and CMS experiments have reported persistent tensions in several branching fractions and angular observables of exclusive rare semileptonic $b$-hadron decays ($b \to s \mu^+\mu^-$). Taken together, these discrepancies exceed the five-standard-deviation level. However, their interpretation remains the subject of active debate, particularly regarding the size and...
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Youngjoon Kwon (Yonsei University)18/08/2026, 12:00Invited plenary talks: 25'+5'
In the Standard Model (SM) of particle physics, fermions exhibit a peculiar hierarchical pattern, most notably in their masses, quark flavor mixing, and charged-current weak interactions. The origin of this flavor structure remains unknown within the SM. Hence, testing these flavor phenomena experimentally provides a vital probe for new physics beyond the SM (BSM) and deeper underlying...
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Morozumi18/08/2026, 14:00Invited plenary talks: 25'+5'
We study the space-time evolution of the lepton number densities of Majorana neutrinos at low energies. We study it for three neutrinos
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cases preparing the initial state with momentum distribution amplitude
localized at the space-time origin. The case that the lightest neutrino is massless and the other case with three massive neutrinos are studied.
These two cases can be distinguished by... -
Takaaki Nomura (Sichuan University)18/08/2026, 14:30Invited plenary talks: 25'+5'
In this talk we discuss neutrino mass models with a non-holomorphic modular symmetry in which we can construct a model with simpler field contents compared with holomorphic framework. After reviewing the framework, in particular, a radiative neutrino mass model with Leptoquarks is discussed where lepton and quark sectors are naturally connected. Focusing on neutrino mass matrix, results of...
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Zhi-zhong Xing (Institute of High Energy Physics, Chinese Academy of Sciences)18/08/2026, 15:00Invited plenary talks: 25'+5'
A neutrino would be the Goldstone-like (massless) fermion if its field had a translational symmetry, as first pointed out by D.V.Volkov and V.P. Akulov in their pioneering paper about supersymmetry in 1973. But it was R. Friedberg and T.D. Lee who first applied such a working symmetry to constraining the pattern of lepton flavor mixing in 2006. My talk is intended to explain why the...
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Chui-Fan Kong (IBS-CTPU-PTC)18/08/2026, 16:00Parallel talks: 17'+3'
If the new physics scale is within the energy scale of neutrino oscillation experiments, it may lead to a renormalization group (RG) running effect between the production and detection processes as well as between different experiments. It is then possible to use multiple neutrino oscillation experiments to disentangle the multiple RG running parameters. We investigate this effect in a...
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Yu Seon Jeong (Sungkyunkwan University)18/08/2026, 16:20Parallel talks: 17'+3'
Neutrino interaction cross sections below 100 GeV are important for current and next-generation neutrino oscillation experiments. Future accelerator-based experiments such as SHiP and the planned Forward Physics Facility will be able to probe neutrino interactions in this energy regime. Reliable theoretical predictions of neutrino cross sections are essential. In this region, deep inelastic...
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Ranjeet Kumar (Seoul National University of Science and Technology)18/08/2026, 16:40Parallel talks: 17'+3'
In this talk, I will discuss a simple Dirac scoto-seesaw framework based on the anomaly-free $U(1)_{B-L}$ charge assignment $(-4,-4,5)$ for $\nu_R$. This chiral charge assignment naturally accounts for the observed neutrino mass-squared differences, with $\Delta m^2_{\rm atm}$ generated at tree level and $\Delta m^2_{\rm sol}$ arising radiatively. After the spontaneous breaking of gauged...
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Antonio Herrero Brocal18/08/2026, 17:00Parallel talks: 17'+3'
Neutrino mass models usually involve the breaking of a custodial symmetry related to the masslessness of neutrinos in the Standard Model. Focusing on low-scale seesaws, we will show how, in contrast with scenarios where the symmetry is explicitly broken, the case of spontaneous symmetry breaking introduces crucial distinct directions, mainly through the associated Nambu-Goldstone Boson ($G$)....
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Matteo Parriciatu (INFN Sezione Roma Tre)18/08/2026, 17:20Parallel talks: 17'+3'
We consider a flavour framework in which quark mass hierarchies naturally arise from a small departure of the modulus VEV from special stabilised regions of genus 2. By extending the modular group to this genus, the same VEV can also account for the spontaneous breaking of the assumed CP symmetry. We present a modular quark model which is able to fit both the mass hierarchies and the CKM...
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Takafumi Kai (Kyushu University)18/08/2026, 17:40Parallel talks: 17'+3'
We investigate stringy constraints on moduli spaces in modular flavor models by analyzing moduli-dependent threshold corrections in heterotic string vacua. While moduli play a crucial role in determining the flavor structure of fermions predicted by modular flavor models, the parameter space in which their vacuum expectation values are allowed has not been fully explored. In this work, within...
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Prof. Mu-Chun Chen (University of California, Irvine)19/08/2026, 09:00Invited plenary talks: 25'+5'
I will discuss recent progress based on modular flavor symmetries to solve the flavor puzzle. In particular, I will describe how modular flavor symmetries can give rise to fermion mass hierarchy and mixing. I will also show that such predictions are stable under renormalization group corrections.
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Michael Ratz (University of California, Irvine)19/08/2026, 09:30Invited plenary talks: 25'+5'
Modular symmetries have been used to address the flavor puzzle. We will discuss how the properties of modular forms allow us to resolve long-standing puzzles in string and flavor model building.
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Miguel Levy (University of Basel)19/08/2026, 10:00Invited plenary talks: 25'+5'
Explaining the observed charged fermion mass hierarchies points to flavour symmetries inducing a suppression of the lighter species’ masses. When the symmetries are global, it is expected that such symmetries are broken by gravity via Planck scale suppressed effective operators. The potential of the spontaneous symmetry-breaking “flavon” field, if the symmetry is discrete, then possesses...
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Dr Doojin Kim (Texas A&M University)19/08/2026, 11:00Invited plenary talks: 25'+5'
Warped extra dimensions provide a geometric framework for generating hierarchically separated mass scales. In this talk, we explore multi-brane warped geometries in which different sectors of the Standard Model and gravity propagate over different portions of the extra dimension, leading to multiple characteristic energy scales within a single geometric framework. We discuss how such...
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Prof. Hyung Do Kim (Seoul National University)19/08/2026, 11:30Invited plenary talks: 25'+5'
Dark photon dark matter with a mass at around meV can be nicely probed by cepheids. Characteristic relationship between period and luminosity is affected by the presence of dark matter. Cooling and heating of Cepheids by dark matter is discussed in detail.
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Kingman Cheung (National Tsing Hua Univ / Konkuk Univ)19/08/2026, 12:00Invited plenary talks: 25'+5'
One of the ultimate goals of future high-energy colliders is to uncover
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the nature of electroweak symmetry breaking (EWSB). In particular, a
precise determination of the Higgs trilinear self-coupling,
$\kappa_3$, would provide crucial insight into the structure of the
Higgs potential and the mechanism of EWSB. We investigate the
sensitivity of multi-TeV muon colliders to $\kappa_3$... -
Jia Liu (Peking University)19/08/2026, 12:30Invited plenary talks: 25'+5'
Missing neutrinos need not destroy collider spin tomography. We formulate the visible measurement under kinematic ambiguities arising from invisible particles as a coarse-grained positive-operator-valued measure on the production spin density matrix. We show that information loss is governed by the null space of the resulting visible-data map, not by the number of kinematic solutions. In...
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Huchan Lee (Seoul National University of Science and Technology)19/08/2026, 14:30Parallel talks: 17'+3'
We investigate the phenomenology of a minimally extended scotogenic model motivated by the observed active neutrino masses, viable dark matter (DM) candidates, and the high-energy behavior of the Standard Model (SM) quartic coupling constant. The neutrino mass generation mechanism is briefly reviewed, covering both normal and inverted mass hierarchies, along with a concise discussion of DM...
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Arghyajit Datta (Chung-Ang University)19/08/2026, 14:50Parallel talks: 17'+3'
In this talk, we will present a possibility of realising successful cogenesis of baryon asymmetry of the Universe, dark matter and neutrino masses within the minimal scotogenic model with low-mass right handed neutrinos (RHN). In the conventional thermal scotogenic leptogenesis setup, there exists a viable parameter space with smaller masses for RHNs as compared to Type-I seesaw case, because...
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Mr Bruno M. S. Oliveira (Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa (UL))19/08/2026, 15:10Parallel talks: 17'+3'
Symmetry-protected low-scale seesaw models can account for the observed neutrino flavour oscillations without fine-tuning, while yielding collider-accessible signatures through pseudo-Dirac heavy neutral leptons (HNLs). Seesaw frameworks generically predict lepton number (LN) violation, which provides a powerful discovery channel. In symmetry-protected realisations, however, the amplitudes for...
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Avelino Vicente (IFIC, CSIC-UV)19/08/2026, 15:30Parallel talks: 17'+3'
The gauge principle is a cornerstone of model building, yet most constructions gauge only the $SU(N)$ factors while leaving the associated $U(1)$ phase redundancies global. I take the gauge principle to its logical extreme and promote all $SU(N)$ groups to $U(N)$, proposing that the underlying symmetry of the strong and electroweak interactions is not $SU(3)_c \times SU(2)_L \times U(1)_Y$ but...
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Soojin Lee (National Tsing Hua University)19/08/2026, 16:20Parallel talks: 17'+3'
We perform a comprehensive global analysis of the Complex Two-Higgs-Doublet
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Model with softly broken Z₂ symmetry, identifying the intrinsic structure
of parameter regions supporting large CP violation under all current
constraints, including the JILA electron EDM bound. Type-I and Type-II
follow qualitatively distinct pathways: Type-I predicts $|d_e| ≳ 10⁻³¹$ e·cm,
fully testable by... -
Michael Shamma (Korea Institute for Advanced Study)19/08/2026, 16:40
We study the low-energy behavior of gauge couplings in the presence of dynamical scalar backgrounds. In weakly coupled, renormalizable four-dimensional theories, gauge invariance prevents tree-level modifications of the gauge kinetic term, so the dependence on scalar background is logarithmic, reflecting renormalization group structure. Large variations thus require large field excursions or...
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Haruto Kitagawa (Kyushu University)19/08/2026, 17:00Parallel talks: 17'+3'
In this study, we analyze the latent features of physical observables in the lepton sector using an autoencoder. To obtain the dataset of physical observables, we employ flow matching to globally sample the Yukawa matrices and Majorana mass parameters within the framework of the type-I seesaw mechanism, reproducing the experimentally observed values. The learned latent representation reveals...
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Yongtae Heo (Hiroshima University, WPI-SKCM²)19/08/2026, 17:20Parallel talks: 17'+3'
Spatially inhomogeneous phases may arise transiently in hot and baryon-rich QCD matter and may leave characteristic imprints on two-pion Hanbury Brown–Twiss (HBT) correlations. We investigate such signatures in Au+Au collisions in the RHIC Beam Energy Scan region using the JAM2 transport model. A controlled one-dimensional spatial modulation is imposed on pion emission distributions generated...
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Blazenka Melic (Rudjer Boskovic Institute Zagreb)19/08/2026, 17:40Parallel talks: 17'+3'
In this talk, I review recent progress in the theoretical description of heavy-hadron lifetimes across different flavor systems, ranging from heavy–light mesons and baryons to doubly heavy hadrons. I discuss how spectator effects, weak annihilation, and Pauli interference contribute to lifetime differences among hadrons with the same heavy quark, and how these effects can be quantified using...
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Ye-Ling Zhou (Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences)20/08/2026, 09:00Invited plenary talks: 25'+5'
Discrete flavour symmetries are widely used to address flavour puzzles in quark and lepton sectors. A key cosmological consequence for spontaneous breaking of these symmetries are the formation of domain walls (DWs), 2D topological defects at the cosmic scale. DWs, if they are generated in the radiation era, should collapse before BBN in order to avoid overclosing the Universe. The collapsing...
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MASAHIDE YAMAGUCHI (Institute for Basic Science)20/08/2026, 09:30Invited plenary talks: 25'+5'
I will discuss why Lambda is the zero.
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Prof. Ki-Young Choi (Sungkyunkwan University)20/08/2026, 10:00Invited plenary talks: 25'+5'
We introduce an idea to probe the early Universe scenario with low reheating temperature using the observation of cosmological 21cm from dark age in the Universe.
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Francesco Paolo Di Meglio (IFIC (UV-CSIC))20/08/2026, 10:30Parallel talks: 17'+3'
Symmetries are the daily bread of modern particle physicists. In a variety of scenarios their breaking is associated with the formation and expansion of bubbles of true vacuum in what is called a first order phase transition. In this context, Electroweak Baryogenesis, a mechanism proposed over 40 years ago, takes advantage of Electroweak symmetry breaking and offers a way to address the baryon...
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Jong-Hyun Yoon (Chungnam National University)20/08/2026, 10:50Parallel talks: 17'+3'
Evaporating primordial black holes heat the surrounding plasma via Hawking radiation, forming localized hotspots whose temperature may far exceed that of the cosmological background. Previous studies of hotspot formation and cooling have treated the subsequent energy transport in flat spacetime, thereby neglecting the expansion of the Universe. We formulate the diffusion equation governing the...
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Partha Kumar Paul (Indian Institute of Technology Hyderabad)20/08/2026, 11:10Parallel talks: 17'+3'
We propose a simple yet testable framework for light fermion dark matter (DM) with mass in the MeV--GeV range, charged under a dark $U(1)_D$ gauge symmetry. Before symmetry breaking, DM annihilates excessively into massless dark gauge bosons, resulting in an under-abundant relic and hence creating severe tension with cosmic microwave background (CMB) and indirect detection constraints. This is...
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Dr Hyunsu Lee (IBS)21/08/2026, 09:00Invited plenary talks: 25'+5'
The nature of dark matter remains one of the most compelling open problems connecting particle physics, astrophysics, and cosmology. While theoretical models—from WIMPs to sub-GeV and feebly interacting candidates—offer a rich space of possibilities, the direct detection program that tests them through dark matter scattering on terrestrial targets has advanced dramatically over the past...
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Seong Chan Park (Yonsei University)21/08/2026, 09:30Invited plenary talks: 25'+5'
The window of dark matter is widely open in the superheavy domain. However, significant model building is requested to make the theory actually work. In this talk, I will discuss some working examples of superheavy dark matter and their potential signals to test the models.
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Jae Hyeok Chang (Seoul National University)21/08/2026, 10:00
The Hawking radiation of photons from primordial black holes can be detected in future gamma-ray telescopes if PBHs constitute even a small fraction of dark matter. PBHs can likewise radiate new particles, which is particularly interesting when these particles are largely secluded from the Standard Model sector and would otherwise be difficult to access. In this talk, I will describe how such...
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kiwoon choi (ibs)21/08/2026, 11:00
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Prof. Gautam Bhattacharyya21/08/2026, 12:00
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Jong-Chul Park (Chungnam National University)21/08/2026, 14:10Parallel talks: 17'+3'
We propose a novel detection strategy for super-light dark matter (DM), $m_{DM}$ ~ O(keV), using a detector based on Graphene Josephson Junctions (GJJ). By intimately integrating the π-bond electrons of graphene as the target material into a Josephson junction, we create a sensor capable of detecting energy deposits as small as O(meV). We evaluate the scattering rates between DM and free...
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Junichiro Kawamura (Kumamoto HS University)21/08/2026, 14:30Parallel talks: 17'+3'
In this talk, I will show that a non-invertible selection rule can tame flavor violation induced by the portal Yukawa couplings of dark matter. In ordinary Abelian discrete symmetries without additional spurions, flavor-dependent charge assignments that forbid flavor-violating portal couplings do not allow a realistic PMNS matrix. This tension between the absence of flavor violation in the...
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Junghoon Joh (SungKyunKwan University)21/08/2026, 14:50Parallel talks: 17'+3'
Dark matter (DM) may accumulate in the gravitational potential of compact astrophysical objects, forming dense bound halos. In particular, if primordial black holes (PBHs) are present, their gravitational field can capture surrounding DM particles and produce a steep density spike in the inner halo region. The resulting compact DM structure provides an environment where microscopic particle...
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Yechan Kim (KAIST)21/08/2026, 15:10Parallel talks: 17'+3'
Ultralight wave dark matter exhibits oscillations that can modulate particle physics observables. The mixing of two wave dark matter fields can alter this simple oscillation, generating nontrivial temporal structures beyond a monochromatic signal. We discuss two scenarios: potential oscillation with periodic symmetry breaking and restoration, and wave-envelope dark matter with a slow beating...
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SANJOY MANDAL (Korea Institute for Advanced Study, Seoul, South Korea)21/08/2026, 15:30Parallel talks: 17'+3'
Heavy neutrinos provide one of the most compelling windows into physics beyond the Standard Model, offering a common framework for neutrino mass generation, the matter-antimatter asymmetry of the Universe, and potentially dark matter. Their rich phenomenology spans collider, intensity-frontier, and cosmological experiments, making them ideal targets for a multimessenger search strategy.
In...
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Daeyeong Jeong (Chungnam National University)21/08/2026, 16:20Parallel talks: 17'+3'
Determining the dark-matter mass is important for interpreting signals in direct-detection experiments. However, this can be challenging for low-threshold detectors with limited recoil-energy information. We present a method to estimate the dark-matter mass using directional information in (effectively) two-dimensional detectors. The motion of the Solar System and the Earth through the...
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Adil Jueid (KIAS)21/08/2026, 16:40Parallel talks: 17'+3'
We discuss a class of models that simultaneously provide reliable dark-matter candidate and give rise to sizable flavor changing neutral currents (FCNC) of the top/bottom quark at the one-loop order. The models consist of color-charged mediators and $SU(2)_L$ singlet dark matter particles both are odd under a $Z_2$ symmetry. We will discuss both the correlations
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between the top FCNC decay... -
Seongsik Kim (Chungnam National University)21/08/2026, 17:00Parallel talks: 17'+3'
We develop a systematic approach for analyzing any dark matter (DM) model that produces boosted dark matter (BDM) through semi-annihilation. We emphasize three points. First, any BDM analysis must be grounded on the correct relic density. Second, any realistic BDM model that aims to be detectable also contains an annihilation channel, which plays a significant role in BDM detection. Finally,...
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Junho Song (Chung ang university)21/08/2026, 17:20Parallel talks: 17'+3'
In the Peccei–Quinn (PQ) pole inflation scenario within the KSVZ model, we propose a spontaneous baryogenesis mechanism incorporating a type-I seesaw model to simultaneously explain the observed baryon asymmetry and axion dark matter abundance in the Universe.
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Both the dark matter abundance and the baryon asymmetry originate from a non-zero axion velocity, naturally generated by an explicit... -
Seong ha Kim (Chungnam National University / IBS-CUP)21/08/2026, 17:40Parallel talks: 17'+3'
Light dark matter (LDM) below the WIMP scale has attracted growing interest, as it can be produced by comparatively low-energy accelerator beams through portal mediators such as the dark photon. A sensitivity study for the Deep Underground Neutrino Experiment (DUNE) near detector demonstrated that an off-axis "PRISM" configuration can effectively separate a dark matter signal from the neutrino...
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MORIMITSU TANIMOTO (Niigata University)22/08/2026, 09:00Invited plenary talks: 25'+5'
We discuss the phenomenological aspects of non-invertible symmetries, in particular, the flavor structure of quarks and leptons. We start with a $Z_M$ discrete symmetry and gauge $Z_2$ so as to obtain a non-invertible symmetry. We derive Yukawa matrices with texture zeros which cannot be realized by a conventional symmetry. We also discuss the SMEFT imposing the non-invertible symmetries and...
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Tatsuo Kobayashi (Hokkaido University)22/08/2026, 09:30Invited plenary talks: 25'+5'
Group-like symmetries and selection rules have been studied in particle physics. However, string compactifications can lead to not only group-like symmetries, but also "symmetries" without group actions, i.e., non-invertible selection rules. Recently, we have derived several non-invertible selection rules from string theory and applied them to particle physics. See e.g. arXiv:2408.13984,...
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Prof. Hiroshi Okada (Henan Normal University)22/08/2026, 10:00Invited plenary talks: 25'+5'
Symmetries have played a central role in understanding the structure of particle interactions, especially in flavor physics. Recently, non-invertible symmetries, described by fusion algebras instead of conventional groups, have opened a new direction in model building.
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I will present a radiative neutrino mass model based on some non-invertible fusion rules. The framework provides a novel... -
Seokhoon Yun (KNU)22/08/2026, 11:00
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Yue Zhao (HKUST)22/08/2026, 11:30Invited plenary talks: 25'+5'
Over ten years ago, Fermi observed an excess of GeV gamma rays from the Galactic Center whose origin is still under debate. One explanation for this excess involves annihilating dark matter; another requires an unresolved population of millisecond pulsars concentrated at the Galactic Center. We use the results from LIGO/Virgo's most recent all-sky search for quasi-monochromatic, persistent...
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Pyungwon Ko (KIAS)22/08/2026, 12:00Invited plenary talks: 25'+5'
When data anomalies are observed, it is a common practice to assume some toy models, simplified models, or EFT. In particular one tends to minimize the number of new physical degrees of freedom, as well as the couplings. In this talk, I will describe a number of examples in physics of flavors and dark matter, where this simple-minded approach results in wrong or unphysical results. Based on...
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Myriam Mondragon (Institute of Physics, National Autonomous University of Mexico UNAM)22/08/2026, 13:30Invited plenary talks: 25'+5'
The Reduction of Couplings (RoC) method is a powerful tool reducing the number of free parameters in a field theory. In SUSY GUTs it is a prerequisite to construct all-loop finite models, where the beta functions vanish at all loops. This has lead previously to models relating the gauge and Yukawa sectors, that successfully predict the Higgs boson and third generation quark masses. In this...
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Prof. Narendra Sahu (Indian Institute of Technology Hyderabad)22/08/2026, 14:00Invited plenary talks: 25'+5'
Non-refutable evidences from galaxy rotation curves, gravitational lensing and cosmic microwave backgroud (CMB) suggests that there exists non-baryonic matter, called dark matter (DM) in the present Universe. The latest data from satellite borne experiment-PLANCK precisely
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measure the DM relic to be 26.8% of the total energy budget of the present Universe. However, the standard model of... -
Byeongsu Yang (Chonnam National University)Invited plenary talks: 25'+5'
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